DEVICE FOR PNEUMATIC VENTILATIONS OF THE WINDOW-BOOK TYPE IN GREENHOUSES.

摘要

"device for pneumatic ventilations of the window type-book folding in greenhouses", characterized in that it is applied on the windows (1) located in the highest part of the greenhouse for the best use of air. To said window through its lower part is fixed a pneumatic cylinder or piston (2) fastened with a clamping flange. The lower part of the cylinder is fastened to a support (3) which in turn is fastened to the tube or post (4) of the scraper with one or some metal flanges (5). the cylinder consists of two inputs, one in the upper part which is the opening input (6) and another in the lower part (7) which is the input for the system closure. (Machine-translation by Google Translate, not legally binding)